right-clicking on a line point in the xtherion graphical edit window brings up a context menu, which contains an 'edit line' option, directly corresponding to the 'edit line' button menu in the side panel.
Clicking on items in this submenu (like 'delete point') make the menu disappear, but does nothing. Hitting return instead of clicking, does cause the selected item action. This is true whether the item selction was effected with the keyboard or by clicking (only the first item 'insert point' can be selected with the mouse alone).
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: therion 5.3.16-7build2
ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Feb 24 02:58:47 2017
JournalErrors:
Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
Users in the 'systemd-journal' group can see all messages. Pass -q to
turn off this notice.
No journal files were opened due to insufficient permissions.
SourcePackage: therion
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.